From 32d27697db8c3f408b458f16eb2db1c201644f46 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Mon, 12 Oct 2020 00:10:04 +0100
Subject: [PATCH] wee_alloc saves quite a bit of binary size

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 Cargo.lock.example | 19 +++++++++++++++++++
 wasm/Cargo.toml    |  2 ++
 wasm/wasm.rs       |  4 ++++
 3 files changed, 25 insertions(+)

diff --git a/Cargo.lock.example b/Cargo.lock.example
index 84b871d0..79fdb2fe 100644
--- a/Cargo.lock.example
+++ b/Cargo.lock.example
@@ -805,6 +805,12 @@ version = "2.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
 
+[[package]]
+name = "memory_units"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8452105ba047068f40ff7093dd1d9da90898e63dd61736462e9cdda6a90ad3c3"
+
 [[package]]
 name = "mime"
 version = "0.2.6"
@@ -1010,6 +1016,7 @@ dependencies = [
  "js-sys",
  "otter-zcoord",
  "wasm-bindgen",
+ "wee_alloc",
 ]
 
 [[package]]
@@ -1898,6 +1905,18 @@ version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d649a3145108d7d3fbcde896a468d1bd636791823c9921135218ad89be08307"
 
+[[package]]
+name = "wee_alloc"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbb3b5a6b2bb17cb6ad44a2e68a43e8d2722c997da10e928665c72ec6c0a0b8e"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "memory_units",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "winapi"
 version = "0.2.8"
diff --git a/wasm/Cargo.toml b/wasm/Cargo.toml
index 4a355520..58065953 100644
--- a/wasm/Cargo.toml
+++ b/wasm/Cargo.toml
@@ -17,3 +17,5 @@ otter-zcoord = { path = "../zcoord" }
 wasm-bindgen = "0.2"
 js-sys = "0.3"
 fehler = "1"
+wee_alloc = "0.4"
+#wee_alloc = { version = "0.4.5", optional = true }
diff --git a/wasm/wasm.rs b/wasm/wasm.rs
index b84d815c..8d525832 100644
--- a/wasm/wasm.rs
+++ b/wasm/wasm.rs
@@ -56,3 +56,7 @@ pub fn canary(s: &str) -> JsString {
   //  https://github.com/WebAssembly/binaryen/issues/3006
   format!("WASM {}", s).into()
 }
+
+//#[cfg(feature = "wee_alloc")]
+#[global_allocator]
+static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
-- 
2.30.2